--3. Write a function that computes the mean of a list, i.e., the sum of all elements in
--the list divided by its length. (You may need to use the fromIntegral function to
--convert the length of the list from an integer into a floating-point number.)

-- meanOfList xs = fromIntegral (sum xs) / fromIntegral (length xs)
-- meanOfList xs = fromIntegral (sum xs) / length xs
meanOfList xs = sum xs / fromIntegral (length xs)
